/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.clc.bt;

import java.util.ArrayList;
import java.util.Set;

import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;

/**
 * This Activity appears as a dialog. It lists any paired devices and
 * devices detected in the area after discovery. When a device is chosen
 * by the user, the MAC address of the device is sent back to the parent
 * Activity in the result Intent.
 */
public class DeviceListActivity extends Activity {
    // Debugging
    private static final String TAG = "DeviceListActivity";
    private static final boolean D = true;

    // Return Intent extra
    public static String EXTRA_DEVICE_ADDRESS = "device_address";
    public static String EXTRA_DEVICE_NAME = "device_name";

    // Member fields
    private BluetoothAdapter mBtAdapter;
    private ArrayAdapter<String> mPairedDevicesArrayAdapter;
    private ArrayAdapter<String> mNewDevicesArrayAdapter;
    private ArrayList<String> networkDevicesAddresses;
    private int mType;
    private int mSIZE;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        Intent startingIntent = getIntent();
        mType = startingIntent.getIntExtra("TYPE", 1);
        mSIZE = startingIntent.getIntExtra("SIZE", 0);
        
        // Setup the window
        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        setContentView(R.layout.device_list);

        // Set result CANCELED incase the user backs out
        setResult(Activity.RESULT_CANCELED);

        // Initialize the button to perform device discovery
        Button scanButton = (Button) findViewById(R.id.button_scan);
        scanButton.setOnClickListener(new OnClickListener() {
            @Override
			public void onClick(View v) {
                doDiscovery();
                v.setVisibility(View.GONE);
//				  Intent i = new Intent("testintent");
//				  i.putExtra("testString", "hello");
//				  Log.e(TAG,"SendBroadCast");
//				  sendBroadcast(i);            	
            }
        });
        networkDevicesAddresses = new ArrayList<String>();
        mNewDevicesArrayAdapter = new ArrayAdapter<String>(this, R.layout.device_name);

        // Find and set up the ListView for paired devices
//        ListView pairedListView = (ListView) findViewById(R.id.paired_devices);
//        pairedListView.setAdapter(mPairedDevicesArrayAdapter);
//        pairedListView.setOnItemClickListener(mDeviceClickListener);

        // Find and set up the ListView for newly discovered devices
        ListView newDevicesListView = (ListView) findViewById(R.id.new_devices);
        newDevicesListView.setAdapter(mNewDevicesArrayAdapter);
        newDevicesListView.setOnItemClickListener(mDeviceClickListener);

        // Register for broadcasts when a device is discovered
        IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
        this.registerReceiver(mReceiver, filter);

        // Register for broadcasts when discovery has finished
        filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
        this.registerReceiver(mReceiver, filter);

        // Register for broadcasts when testintent
        filter = new IntentFilter(ConnectionService.NEW_NETWORK_DEVICE_FOUND);
        //this.registerReceiver(mReceiver, filter); 
        Log.e(TAG,"Oncreate Register");
        getApplicationContext().registerReceiver(mReceiver, filter);
        
        // Get the local Bluetooth adapter
        mBtAdapter = BluetoothAdapter.getDefaultAdapter();
        // Initialize array adapters. One for already paired devices and
        // one for newly discovered devices
        if(mType == 1){
        		mPairedDevicesArrayAdapter = new ArrayAdapter<String>(this, R.layout.device_name);
            // Find and set up the ListView for paired devices
        		ListView pairedListView = (ListView) findViewById(R.id.paired_devices);
        		pairedListView.setAdapter(mPairedDevicesArrayAdapter);
	        pairedListView.setOnItemClickListener(mDeviceClickListener);
	        // Get a set of currently paired devices
	        Set<BluetoothDevice> pairedDevices = mBtAdapter.getBondedDevices();

	        // If there are paired devices, add each one to the ArrayAdapter
	        if (pairedDevices.size() > 0) {
	            findViewById(R.id.title_paired_devices).setVisibility(View.VISIBLE);
	            for (BluetoothDevice device : pairedDevices) {
	                mPairedDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
	            }
	        } else {
	            String noDevices = getResources().getText(R.string.none_paired).toString();
	            mPairedDevicesArrayAdapter.add(noDevices);
	        }	        
        }
        
        if(mType == 4){
            // Indicate scanning in the title
            setProgressBarIndeterminateVisibility(true);
            setTitle(R.string.scanning);

            if(mSIZE > 0){
            		String Addr= "";
            		String Name ="";
            		for(int i=0; i<mSIZE;i++){
            			Addr = startingIntent.getStringExtra("DEVICEADDR"+i);
            			Name = startingIntent.getStringExtra("DEVICENAME"+i);
	      			networkDevicesAddresses.add(Addr);
	      			mNewDevicesArrayAdapter.add(Name + "\n" + Addr);
            		}
            }
            else{
            // Turn on sub-title for new devices
            findViewById(R.id.title_new_devices).setVisibility(View.VISIBLE);
            }
            
        	
        }


    }

	@Override
    protected void onDestroy() {
        super.onDestroy();

        // Make sure we're not doing discovery anymore
        if (mBtAdapter != null) {
            mBtAdapter.cancelDiscovery();
        }

        // Unregister broadcast listeners
        this.unregisterReceiver(mReceiver);
		getApplicationContext().unregisterReceiver(mReceiver);
	}

	/**
     * Start device discover with the BluetoothAdapter
     */
    private void doDiscovery() {
        if (D) Log.d(TAG, "doDiscovery()");

        // Indicate scanning in the title
        setProgressBarIndeterminateVisibility(true);
        setTitle(R.string.scanning);

        // Turn on sub-title for new devices
        findViewById(R.id.title_new_devices).setVisibility(View.VISIBLE);

        // If we're already discovering, stop it
        if (mBtAdapter.isDiscovering()) {
            mBtAdapter.cancelDiscovery();
        }

        // Request discover from BluetoothAdapter
        mBtAdapter.startDiscovery();
    }

    // The on-click listener for all devices in the ListViews
    private OnItemClickListener mDeviceClickListener = new OnItemClickListener() {
        @Override
		public void onItemClick(AdapterView<?> av, View v, int arg2, long arg3) {
            // Cancel discovery because it's costly and we're about to connect
            mBtAdapter.cancelDiscovery();

            // Get the device MAC address, which is the last 17 chars in the View
            String info = ((TextView) v).getText().toString();
            String address = info.substring(info.length() - 17);
            
            String deviceName = info.substring(0,info.length()-17);
            
            // Create the result Intent and include the MAC address
            Intent intent = new Intent();
            intent.putExtra(EXTRA_DEVICE_ADDRESS, address);
            intent.putExtra(EXTRA_DEVICE_NAME, deviceName);

            // Set result and finish this Activity
            setResult(Activity.RESULT_OK, intent);
            finish();
        }
    };

    // The BroadcastReceiver that listens for discovered devices and
    // changes the title when discovery is finished
    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            
          	if(ConnectionService.NEW_NETWORK_DEVICE_FOUND.equals(action)){
          		Log.e(TAG,"DeviceFound");
          		String Addr = intent.getStringExtra(ConnectionService.DEVICE_ADDR);
          		String Name = intent.getStringExtra(ConnectionService.DEVICE_NAME);
          		if(!networkDevicesAddresses.contains(Addr)){
          			networkDevicesAddresses.add(Addr);
          			mNewDevicesArrayAdapter.add(Name + "\n" + Addr);
          		}
          		Log.e(TAG,"newDeviceCount:"+mNewDevicesArrayAdapter.getCount());
                setProgressBarIndeterminateVisibility(false);
                setTitle(R.string.select_device);          		
          	}
          	
            
            // When discovery finds a device
            if (BluetoothDevice.ACTION_FOUND.equals(action)) {
                // Get the BluetoothDevice object from the Intent
                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                // If it's already paired, skip it, because it's been listed already
                if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
                    mNewDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
                }
            // When discovery is finished, change the Activity title
            } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
                setProgressBarIndeterminateVisibility(false);
                setTitle(R.string.select_device);
                if (mNewDevicesArrayAdapter.getCount() == 0) {
                    String noDevices = getResources().getText(R.string.none_found).toString();
                    mNewDevicesArrayAdapter.add(noDevices);
                }
            }
        }
    };

}
